Close Binary Star Systems Are Thought to Form When

question 86

Multiple Choice

Close binary star systems are thought to form when

• A)two interstellar gas clouds happen to contract so close together that there's no room for a disk or planets.
• B)the protostellar disk around a protostar has enough material to form a second star.
• C)gravity pulls two neighboring protostars quite close together,but angular momentum causes them to orbit each other rather than colliding.
• D)a protostar emits two jets,each of which turns into a star.

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